Town and school leaders hope to quickly resolve a dispute with their insurance company over their March bill, which the company says was underpaid by $471,000.

Officials say the amount represents a credit negotiated with Cigna in December by former schools Finance Director Art Colley, but the company neverthless threatens to cancel employees' health policies unless the bill is promptly paid.

In a May 8 letter to Schools Superintendent Tony Bivona, Cigna wrote that the district paid less than $34,000 on a $505,000 bill. If not paid, company officials wrote, the policy will be canceled as of June 19.